Corner brace



FIG. 1 is a perspective view of a corner brace embodying my design;

FIG. 2 is a side elevational view thereof as seen from the lower end of FIG. 4;

FIG. 3 is a side elevational view thereof as seen from the left of FIG. 4; and,

FIG. 4 is a top plan view thereof with the bottom view being a mirror image. 

The ornamental design for a corner brace, as shown and described. 